چکیده مقاله
The development in urban areas can be included the construction of shallow tunnels in soft soils The construction of tunnels in shallow depth causes the ground to displace Such displacements can, under certain circumstances, be imposed on in service piled foundations, which are likely to be constructed in soft soils subsequently Therefore, the response of piles to axial loading may be altered In this paper, the free field vertical movements of the ground due to tunnelling, is primarily computed using a relatively new approach In the next step, the computed free field movements of the ground are imposed on the pile The response of the pile under the ground movements is then calculated using a numerical approach based on finite element methods It is shown, through a parametric study, that the effects of tunnelling on the pile response is of great importance and depends on tunnel geometry, tunnel placement relative to the pile, the location of the pile tip relative to the tunnel axis, soil nonlinearity, ground loss ratio, and pile geometry It will be shown that the induced forces on piles caused by tunnelling are significant and should be taken into consideration when designing piles for external loads exerted from supported structures
کلیدواژهها
نویسندگان
Mahmoud Ghazavi
Assistant Professor, Civil Engineering Department, Isfahan University of Technology, Isfahan, Iran
شیوه ارجاع
Ghazavi, Mahmoud,1380,Influence of Tunneling in Soft Soils on Axial Response of Piles,05th Iranian Tunneling Conference,Tehran
ارائهشده در
مجموعه مقالات پنجمین کنفرانس تونل ایران21 آبان 1380 · تهران